.mynav ul {
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-pack: center;
        -ms-flex-pack: center;
            justify-content: center;
    -ms-flex-wrap: wrap;
        flex-wrap: wrap;
    list-style-type: none;
    padding: 0;
  }
  
  .mynav li:not(:last-child) {
    margin-right: 20px;
  }
  

  .mynav a{
    display: block;
    font-size: 20px;
    color: black;
    text-decoration: none;
    padding: 7px 15px;
  }
  
  .target {
    position: absolute;
    padding-bottom: 10px;
    border-bottom: 4px solid transparent;
    z-index: 100;
    -webkit-transform: translateX(-60px);
            transform: translateX(-60px);
  }
  
  .mynav a,
  .target {
    -webkit-transition: all .35s ease-in-out;
    transition: all .35s ease-in-out;
  }

  .type-guide{
      width: 1903px;
      min-width: 1903px;
      height: auto;
      position: absolute;
      top: 1000px;
      margin-top: 80px;
  }

  .small-introductions{
      width: 1903px;
      min-width: 1903px;
      height: auto;
      position: absolute;
      top: 1100px;
      padding: 50px 200px 50px 200px;
  }

  .small-introductions-titles{
      width: 100%;
      height: 50px;
      line-height: 50px;
      margin-top: 20px;
      font-size: 40px;
      text-align: center;
  }

  .small-introductions-contents{
      width: 100%;
      height: 600px;
      margin-top: 20px;
  }

  .small-introductions-buttons{
      width: 100%;
      height: 100px;
      margin: 10px 0 10px 0;
      text-align: center;
      border-bottom: 1px solid;
  }


  .xuanfu-button{
    background:rgb(235, 235, 235);
    color:rgb(180, 180, 180);
    border:none;
    position:relative;
    width:600px;
    height:60px;
    font-size:1.6em;
    padding:0 2em;
    cursor:pointer;
    transition:800ms ease all;
    outline:none;
    margin-top: 20px;
  }
  .xuanfu-button:hover{
	background: linear-gradient(115deg, rgb(183, 247, 255) 5%,rgb(250, 239, 250) 95%);
    color:rgb(57, 120, 255);

  }
  .xuanfu-button:before,button:after{
    content:'';
    position:absolute;
    top:0;
    right:0;
    height:2px;
    width:0;
    background: rgb(57, 120, 255);
    transition:400ms ease all;

  }
  .xuanfu-button:after{
    right:inherit;
    top:inherit;
    left:0;
    bottom:0;

  }
  .xuanfu-button:hover:before,button:hover:after{
    width:100%;
    transition:800ms ease all;
  }



  /*this is the project css,it can be used again */
  .project{
      width: 459px;
      height: 100%;
      float: left;
      margin: 0 20px 0 20px;
      border: 1px solid blue;
      background-color: #fff;
      opacity: 0.8;
  }
  .project:hover{
    opacity: 1;
  }

  .project-image{
      width: 100%;
      height: 50%;
  }

  .cover-image{
      width: 100%;
      height: 100%;
      border-bottom: 1px solid;
  }

  .title{
    width: 100%;
    height: 80px;
    text-align: center;
    font-size: 20px;;
    color: rgb(66, 2, 185);
    padding-top: 20px;
    padding-bottom: 20px;
    padding-left: 10px;
    padding-right: 10px;
    max-height: 80px;
  }

  .General-information{
    width: 100%;
    height: 100px;
    text-align: left;
    font-size: 15px;
    color: gray;
    padding-left: 20px;
    padding-right: 20px;
    padding-top: 20px;
    padding-bottom: 20px;
    max-height: 100px;
    text-indent: 2em;
    overflow: hidden;
    text-overflow: ellipsis;
    border-top: 1px dotted;
    border-bottom: 1px dotted;
  }

  .labels{
    width: 100%;
    height: 30px;
    text-align: center;
    padding: 5px 20px 5px 20px;
    color: gray;
    line-height: 20px;
    border-bottom: 1px dotted;
  }

  .main-information{
    width: 100%;
    height: 90px;
  }

  .oneofthree-info{
    width: 33%;
    height: 90px;
    float: left;
    text-align: center;
    line-height: 40px;
    padding: 5px 1% 5px 1%;
  }

  .waste-words{
      width: 1903px;
      min-width: 1903px;
      height: 110px;
      position: absolute;
      top: 5950px;
      background-color: rgb(34, 0, 78);
      text-align: center;
      line-height: 110px;
      font-size: 20px;
      color: #fff;
  }

